The phrase "array of subject" is not correct in standard written English.
It seems to be a misphrasing; the correct form would be "array of subjects."
Example: "The research team analyzed an array of subjects to gather diverse perspectives on the issue."
Alternatives: "variety of subjects" or "range of subjects."
Genetic computation is a rapidly growing field and can be applied to an array of subject areas, from optimization problems in medicine, data fitting and clustering in engineering, to acoustics in physics.
Her lyrics have referenced a wide array of subject matter, often relatively obscure, as in G. I. Gurdjieff in the song "Them Heavy People", while "Deeper Understanding", from The Sensual World, portrays a person who stays indoors, obsessively talking to a computer and shunning human contact.
Inspectors at entry centers are usually exceptionally competent because they must cover a broad array of subject areas, but their competency must be taxed at times.
Grad students can choose from an infinite array of subjects.
Testifying before the House Financial Services Committee, Mr. Greenspan touched on an array of subjects.
Through the decades, the magazine has published stories on an unusually diverse array of subjects.
The letters roamed garrulously over an array of subjects, among them right-wing politics, golf and alcohol.
Students can choose from an array of subjects not offered everywhere.
Birkbeck is full of academics who are equipped with the knowledge and expertise to take media interviews on a vast array of subjects.
Ms. Curlee hands out lesson plans on an array of subjects, including rhythm and poetry, bones and joints, the layers of the rain forest.
Editorially, the magazine is a mix of both raw and refined sensibilities, covering in the March issue an array of subjects, some dry, some steamy.
